Why did many of president kennedy's "new frontier" programs fail?

The correct answer was D.) They did not gain support amongst many Congressional conservatives.

This is USA testpreps explaination..."Many of JFK's "New Frontier" programs did not pass out of Congress because they did not gain support amongst many Congressional conservatives. There are many explanations for this- some considered him too liberal, others questioned his experience- but it should be noted that most of this programs DID find success following his assassination and during the presidency of his successor, Lyndon B. Johnson."

after the french-indian war.

the debate held in 1980 by carter and reagan was decisive for the elections. while carter tried to convince people that reagan was a "war hawk", reagan put all his efforts in showing the necessity to take care about medicare and the social security advantage. this debate reagan to win the elections